214 Machine Drawing
dharm
d:\N-Design\Des15-1.pm5
Fundamental deviation in microns
(1 micron = 0.001 mm)
Diameter
Upper
deviation
(es)
Lower deviation (ei)
steps in
mm
js
+
ab cde f gh
j
k
over
upto
All grades
5.6
7
8
4
to
7
≤ 3, > 7
—
*3
- 270
- 140
- 60
- 20
- 14
- 6
- 2
0
- 2
- 4
- 6
0– 0
3
6
- 270
- 140
- 70
- 30
- 20
- 10
- 4
0
- 2
- 4
—
+ 1
0
6
10
- 280
- 150
- 80
- 40
- 25
- 13
- 5
0
- 2
- 5
—
+ 1
0
10
14
- 290
- 150
- 95
- 50
- 32
- 16
- 6
0
± IT/2
- 3
- 6
—
+ 1
0
14
18
18
24
- 300
- 160
- 110
- 65
- 40
- 20
- 7
0
- 4
- 8
—
+ 2
0
24
30
30
40
- 310
- 170
- 120
- 80
- 50
- 25
- 9
0
- 5
- 10
—
+ 2
0
40
50
- 320
- 180
- 130
50
65
- 340
- 190
- 140
- 100
- 60
- 30
- 10
0
- 7
- 12
—
+ 2
0
65
80
- 360
- 200
- 150
80
100
- 380
- 220
- 170
- 120
- 72
- 36
- 12
0
- 9
- 15
—
+ 3
0
100
120
- 410
- 240
- 180
120
140
- 460
- 260
- 200
140
160
- 520
- 280
- 210
- 145
- 85
- 43
- 14
0
- 11
- 18
—
+ 3
0
160
180
- 580
- 310
- 230
Table 15.2
Fundamental deviations for shafts of types
a
to
k
of sizes upto 500mm
(contd.)